What is the horizontal acceleration of a ball that is launched horizontally with a velocity of 5.6 m/s?

Explanation:

When an object is launched under the action of gravity, the path followed by it is called projectile motion. The horizontal component of velocity is given by :

is the angle made with horizontal

In case of projectile motion, the velocity of projectile is constant in horizontal direction. As a result the rate of change of velocity will be equal to 0. So, the horizontal acceleration of a ball that is launched horizontally is 0. Hence, this is the required solution.

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.